feat(web): cockpit robot picker

[paul-nechifor]

• Adds a robot picker to the web cockpit when multiple robots share a relay. Users can choose which robot to view from a list showing their names, models, and IDs.
• Displays the selected robot's own panels and page tabs, so robots with different cockpit layouts can share the same relay.
• Adds a "switch robot" button to the status bar. It reopens the list and highlights the current selection.

[greptile-apps]

Greptile Summary

Summary

• Adds a cockpit workflow for selecting among multiple registered robots and reopening that selection from the status bar.
• Updates cockpit rendering to follow the selected robot’s manifest, panels, and pages.
• Adds test and documentation coverage for the multi-robot workflow.

Merge Safety

Do not merge yet: the outstanding robot-selection issue can leave an available robot inaccessible until the operator reloads the cockpit. The narrow-screen control clipping remains a non-blocking usability concern.

Confidence Score: 4/5

Not safe to merge because an available remaining robot can become inaccessible without reloading the cockpit.

The outstanding blocking robot-selection thread remains valid. When the selected robot disconnects and exactly one robot remains, the current code sets hasMultipleRobots to false and closes the picker. showPicker consequently remains false while watchedRobot is null, and onSwitchRobot is also null. The cockpit shows the waiting state rather than allowing the operator to select the remaining robot. The outstanding narrow-viewport thread also remains valid: the fixed-height, overflow-hidden status bar can clip the non-shrinking switch button outside the visible area at 320px.

_{Reviews (2): Last reviewed commit: "feat(web): cockpit robot picker" | Re-trigger Greptile}

[codecov]

Codecov Report

❌ Patch coverage is 18.36735% with 40 lines in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
dimos/e2e_tests/test_robot_picker_browser.py	18.36%	40 Missing ⚠️

@@                          Coverage Diff                           @@
##           paul/feat/t12a-relay-url-discovery    #3951      +/-   ##
======================================================================
- Coverage                               78.22%   78.20%   -0.03%     
======================================================================
  Files                                    1416     1417       +1     
  Lines                                  133807   133856      +49     
  Branches                                11577    11577              
======================================================================
+ Hits                                   104668   104679      +11     
- Misses                                  25934    25972      +38     
  Partials                                 3205     3205              

Components	Coverage Δ
Tests	94.55% <18.36%> (-0.08%)	⬇️

Flag	Coverage Δ
OS-ubuntu-24.04-arm	74.41% <18.36%> (-0.02%)	⬇️
OS-ubuntu-latest	74.98% <18.36%> (-0.03%)	⬇️
Py-3.10	74.97% <18.36%> (-0.03%)	⬇️
Py-3.11	74.97% <18.36%> (-0.03%)	⬇️
Py-3.12	74.98% <18.36%> (-0.02%)	⬇️
Py-3.13	74.98% <18.36%> (-0.03%)	⬇️
Py-3.14	74.98% <18.36%> (-0.03%)	⬇️
Py-3.14t	74.98% <18.36%> (-0.03%)	⬇️
SelfHosted-Linux	35.62% <18.36%> (-0.11%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
dimos/e2e_tests/test_robot_picker_browser.py	18.36% <18.36%> (ø)

... and 1 file with indirect coverage changes

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